Step 1: Explain subtractive color theory. Subtractive color models show how color results from light reflection, where certain wavelengths are absorbed. This model applies to physical materials like inks, dyes, and paints.
Step 2: Name the primary colors of the subtractive system. The primary colors are Cyan, Magenta, and Yellow (CMY). In printing, Black (K for Key) is frequently added for better color and ease, forming the CMYK model.
Step 3: Contrast with the additive system. Additive primaries (Red, Green, Blue) are used for light emission. Subtractive primaries (Cyan, Magenta, Yellow) are the additive secondary colors, used for light absorption and reflection.